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http: avoid header duplication - take struct fields out of Header map

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R=r
CC=golang-dev, petar-m
https://golang.org/cl/183132
This commit is contained in:
Russ Cox 2010-01-06 15:45:30 -08:00
parent 690fcacdd3
commit 968d6a6d5a
1 changed files with 12 additions and 2 deletions
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12
src/pkg/http/request.go
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@ -160,6 +160,11 @@ func (req *Request) Write(w io.Writer) os.Error {
// Response.{GetHeader,AddHeader} and string constants for "Host", // Response.{GetHeader,AddHeader} and string constants for "Host",
// "User-Agent" and "Referer". // "User-Agent" and "Referer".
for k, v := range req.Header { for k, v := range req.Header {
// Host, User-Agent, and Referer were sent from structure fields
// above; ignore them if they also appear in req.Header.
if k == "Host" || k == "User-Agent" || k == "Referer" {
continue
}
io.WriteString(w, k+": "+v+"\r\n") io.WriteString(w, k+": "+v+"\r\n")
} }
@ -497,9 +502,12 @@ func ReadRequest(b *bufio.Reader) (req *Request, err os.Error) {
// GET http://www.google.com/index.html HTTP/1.1 // GET http://www.google.com/index.html HTTP/1.1
// Host: doesntmatter // Host: doesntmatter
// the same. In the second case, any Host line is ignored. // the same. In the second case, any Host line is ignored.
if v, present := req.Header["Host"]; present && req.URL.Host == "" { if v, present := req.Header["Host"]; present {
if req.URL.Host == "" {
req.Host = v req.Host = v
} }
req.Header["Host"] = "", false
}
// RFC2616: Should treat // RFC2616: Should treat
// Pragma: no-cache // Pragma: no-cache
@ -525,9 +533,11 @@ func ReadRequest(b *bufio.Reader) (req *Request, err os.Error) {
// Pull out useful fields as a convenience to clients. // Pull out useful fields as a convenience to clients.
if v, present := req.Header["Referer"]; present { if v, present := req.Header["Referer"]; present {
req.Referer = v req.Referer = v
req.Header["Referer"] = "", false
} }
if v, present := req.Header["User-Agent"]; present { if v, present := req.Header["User-Agent"]; present {
req.UserAgent = v req.UserAgent = v
req.Header["User-Agent"] = "", false
} }
// TODO: Parse specific header values: // TODO: Parse specific header values: